From: John Koleszar <jkoleszar@google.com>
Date: Thu, 7 Jul 2011 14:38:23 +0000 (-0400)
Subject: Set VPX_FRAME_IS_DROPPABLE
X-Git-Tag: v0.9.7~51^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=37de0b8bdf163e2177f54a8694e952188218282c;p=libvpx

Set VPX_FRAME_IS_DROPPABLE

Allow the encoder to inform the application that the encoded frame will not
be used as a reference.

Change-Id: I90e41962325ef73d44da03327deb340d6f7f4860
---

diff --git a/vp8/encoder/onyx_if.c b/vp8/encoder/onyx_if.c
index a6d7a4304..a84a7b4da 100644
--- a/vp8/encoder/onyx_if.c
+++ b/vp8/encoder/onyx_if.c
@@ -4589,6 +4589,20 @@ int vp8_receive_raw_frame(VP8_PTR ptr, unsigned int frame_flags, YV12_BUFFER_CON
 }
 
 
+static int frame_is_reference(const VP8_COMP *cpi)
+{
+    const VP8_COMMON *cm = &cpi->common;
+    const MACROBLOCKD *xd = &cpi->mb.e_mbd;
+
+    return cm->frame_type == KEY_FRAME || cm->refresh_last_frame
+           || cm->refresh_golden_frame || cm->refresh_alt_ref_frame
+           || cm->copy_buffer_to_gf || cm->copy_buffer_to_arf
+           || cm->refresh_entropy_probs
+           || xd->mode_ref_lf_delta_update
+           || xd->update_mb_segmentation_map || xd->update_mb_segmentation_data;
+}
+
+
 int vp8_get_compressed_data(VP8_PTR ptr, unsigned int *frame_flags, unsigned long *size, unsigned char *dest, INT64 *time_stamp, INT64 *time_end, int flush)
 {
 #if HAVE_ARMV7
@@ -4845,6 +4859,7 @@ int vp8_get_compressed_data(VP8_PTR ptr, unsigned int *frame_flags, unsigned lon
     // if its a dropped frame honor the requests on subsequent frames
     if (*size > 0)
     {
+        cpi->droppable = !frame_is_reference(cpi);
 
         // return to normal state
         cm->refresh_entropy_probs = 1;
diff --git a/vp8/encoder/onyx_int.h b/vp8/encoder/onyx_int.h
index b9544a171..ed2073aab 100644
--- a/vp8/encoder/onyx_int.h
+++ b/vp8/encoder/onyx_int.h
@@ -615,6 +615,7 @@ typedef struct VP8_COMP
 #if CONFIG_REALTIME_ONLY
     int force_next_frame_intra; /* force next frame to intra when kf_auto says so */
 #endif
+    int droppable;
 } VP8_COMP;
 
 void control_data_rate(VP8_COMP *cpi);
diff --git a/vp8/vp8_cx_iface.c b/vp8/vp8_cx_iface.c
index 5e1278a4c..966355da1 100644
--- a/vp8/vp8_cx_iface.c
+++ b/vp8/vp8_cx_iface.c
@@ -798,6 +798,9 @@ static vpx_codec_err_t vp8e_encode(vpx_codec_alg_priv_t  *ctx,
                     pkt.data.frame.duration = 0;
                 }
 
+                if (cpi->droppable)
+                    pkt.data.frame.flags |= VPX_FRAME_IS_DROPPABLE;
+
                 if (cpi->output_partition)
                 {
                     int i;